Question 1

Which of these statements is NOT a recommendation when using a flowchart?

Accepted Answer

A)  Read and follow the test instructions. 
B)  Skip selected identifiable test steps. 
C)  Be sure of your equipment: Does your jumper wire have continuity? 
D)  Make the repair as indicated in the final step. 
A)  Read and follow the test instructions. 
B)  Skip selected identifiable test steps. 
C)  Be sure of your equipment: Does your jumper wire have continuity? 
D)  Make the repair as indicated in the final step. B

Question 2

Current ramping can be used to identify problems with a motor:

Accepted Answer

A)  that will not operate at all due to a total loss of brush-to-armature contact internally 
B)  that has intermittent symptoms or is not operating at peak efficiency 
C)  that is located in a circuit with a blown fuse 
D)  that is located in a circuit that is disconnected from the battery 
A)  that will not operate at all due to a total loss of brush-to-armature contact internally 
B)  that has intermittent symptoms or is not operating at peak efficiency 
C)  that is located in a circuit with a blown fuse 
D)  that is located in a circuit that is disconnected from the battery B

Question 3

Which device is NOT an essential tool of electronic system diagnosis?

Accepted Answer

A)  Scan tool 
B)  Exhaust gas analyzer 
C)  Digital multimeter 
D)  Breakout box 
A)  Scan tool 
B)  Exhaust gas analyzer 
C)  Digital multimeter 
D)  Breakout box D

Question 4

Pinpoint testing a DTC is being discussed. Technician A says that to verify monitor readiness status, you should use a scan tool. Technician B says that if a monitor is displayed on the scan tool as N/A, it does not apply to the vehicle you are working on. Who is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B

Question 5

Two technicians are discussing using a smoke machine to test an EVAP system. Technician A says that the EVAP system should be leak-tested before setting the machine's controls to Smoke . Technician B says that if the ball in the machine's flowmeter falls to the absolute bottom, it proves that there is a leak. Who is correct?

Accepted Answer

A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B

Question 6

Which statement is true concerning a breakout box (BOB)?

Accepted Answer

A)  It provides the same functionality as a scan tool. 
B)  It is normally used to reprogram the PCM. 
C)  It allows pinpoint tests of electronic system circuits without back-probing 
D)  Both A and B 
A)  It provides the same functionality as a scan tool. 
B)  It is normally used to reprogram the PCM. 
C)  It allows pinpoint tests of electronic system circuits without back-probing 
D)  Both A and B

Question 7

What scenario is indicated by a loss of more than about 2 in. Hg of intake manifold vacuum as the RPM is increased?

Accepted Answer

A)  The level of current flow 
B)  A 50 percent duty cycle 
C)  Excessive exhaust backpressure 
D)  The volume of air entering the engine 
A)  The level of current flow 
B)  A 50 percent duty cycle 
C)  Excessive exhaust backpressure 
D)  The volume of air entering the engine

Question 8

What process is involved with on-board reprogramming?

Accepted Answer

A)  The algorithm used to obtain the DC equivalent value 
B)  The process of preventing two or more messages from colliding on the data bus 
C)  Loading the reflash file to the appropriate control module via the vehicle's DLC 
D)  Removal of the control module from the vehicle 
A)  The algorithm used to obtain the DC equivalent value 
B)  The process of preventing two or more messages from colliding on the data bus 
C)  Loading the reflash file to the appropriate control module via the vehicle's DLC 
D)  Removal of the control module from the vehicle

Question 9

If an OBD II PCM has set a catalyst efficiency code, all of the following pre-checks should be performed before condemning the converter EXCEPT for:

Accepted Answer

A)  checking the exhaust system for any leaks 
B)  using a scan tool to check for O2 sensor codes 
C)  visually checking the O2 sensors for cracked housings 
D)  verifying that the engine does not have excessive cycling 
A)  checking the exhaust system for any leaks 
B)  using a scan tool to check for O2 sensor codes 
C)  visually checking the O2 sensors for cracked housings 
D)  verifying that the engine does not have excessive cycling

Question 10

Technician A says that a self-test DTC identifies a hard fault. Technician B says that a memory DTC always represents a soft fault. Who is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B

Question 11

What should you do first if the symptom the customer reports does not appear to be present?

Accepted Answer

A)  Check to see whether the PCM has stored any DTCs in memory 
B)  Perform a voltage drop test 
C)  Use a choke tester to heat and/or cool the suspect module 
D)  Use a DSO and a low-current amp probe to sample the current waveform 
A)  Check to see whether the PCM has stored any DTCs in memory 
B)  Perform a voltage drop test 
C)  Use a choke tester to heat and/or cool the suspect module 
D)  Use a DSO and a low-current amp probe to sample the current waveform

Question 12

TSBs are being discussed. Technician A says TSBs are produced and issued by the International Automotive Technicians' Network. Technician B says a TSB-recommended repair may involve something as in-depth as reflashing an ECU. Who is correct?

Accepted Answer

A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B

Question 13

Which item is NOT considered a tool for pinpoint testing?

Accepted Answer

A)  DMM 
B)  Lab scope (DSO) 
C)  Scan tool 
D)  Battery load testers 
A)  DMM 
B)  Lab scope (DSO) 
C)  Scan tool 
D)  Battery load testers

Question 14

Current ramping is a diagnostic procedure that is best suited for diagnosing problems associated with:

Accepted Answer

A)  circuitry 
B)  switches 
C)  load components 
D)  input sensors 
A)  circuitry 
B)  switches 
C)  load components 
D)  input sensors

Question 15

Three-in-one diagnostic tools are being discussed. Technician A says the Snap-on Modis can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Technician B says the OTC Genisys can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Who is correct?

Accepted Answer

A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B

Question 16

If the engine cranks but does not start, what should be checked?

Accepted Answer

A)  Primary ignition 
B)  Both secondary and primary ignition 
C)  Secondary ignition 
D)  Either secondary or primary ignition 
A)  Primary ignition 
B)  Both secondary and primary ignition 
C)  Secondary ignition 
D)  Either secondary or primary ignition

Question 17

A vehicle equipped with OBD II is being diagnosed with a scan tool. There are three codes stored. Technician A says to clear the codes and drive the vehicle to see if any reappear. Technician B says the codes may be related to the same problem. Who is correct?

Accepted Answer

A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A 
B)  Technician B 
C)  Both A and B 
D)  Neither A nor B

Question 18

Which term represents an online diagnostic information service designed to help the automotive service technician in diagnosing difficult problems?

Accepted Answer

A)  Identifix 
B)  Ifixit 
C)  Icracked 
D)  Technicianonline 
A)  Identifix 
B)  Ifixit 
C)  Icracked 
D)  Technicianonline

Question 19

Diagnosing a loss of the computer's reference voltage is being discussed. Technician A says that the VREF signal should be between about 4.2 and 5.2 V when measured at a sensor. Technician B says that the VREF signal should be between about 5.2 and 9.6 V. Who is correct?

Accepted Answer

A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B 
A)  Technician A only 
B)  Technician B only 
C)  Both A and B 
D)  Neither A nor B

Question 20

When using an electrical schematic, the first step is to:

Accepted Answer

A)  identify the powers and grounds 
B)  identify the components 
C)  identify the input and output circuits 
D)  identify any data buses used for communication between computers 
A)  identify the powers and grounds 
B)  identify the components 
C)  identify the input and output circuits 
D)  identify any data buses used for communication between computers

Which of these statements is NOT a recommendation when using a flowchart?

Current ramping can be used to identify problems with a motor:

Which device is NOT an essential tool of electronic system diagnosis?

Pinpoint testing a DTC is being discussed. Technician A says that to verify monitor readiness status, you should use a scan tool. Technician B says that if a monitor is displayed on the scan tool as N/A, it does not apply to the vehicle you are working on. Who is correct?

Which statement is true concerning a breakout box (BOB)?

What scenario is indicated by a loss of more than about 2 in. Hg of intake manifold vacuum as the RPM is increased?

What process is involved with on-board reprogramming?

If an OBD II PCM has set a catalyst efficiency code, all of the following pre-checks should be performed before condemning the converter EXCEPT for:

Technician A says that a self-test DTC identifies a hard fault. Technician B says that a memory DTC always represents a soft fault. Who is correct?

What should you do first if the symptom the customer reports does not appear to be present?

TSBs are being discussed. Technician A says TSBs are produced and issued by the International Automotive Technicians' Network. Technician B says a TSB-recommended repair may involve something as in-depth as reflashing an ECU. Who is correct?

Which item is NOT considered a tool for pinpoint testing?

Current ramping is a diagnostic procedure that is best suited for diagnosing problems associated with:

Three-in-one diagnostic tools are being discussed. Technician A says the Snap-on Modis can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Technician B says the OTC Genisys can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Who is correct?

If the engine cranks but does not start, what should be checked?

A vehicle equipped with OBD II is being diagnosed with a scan tool. There are three codes stored. Technician A says to clear the codes and drive the vehicle to see if any reappear. Technician B says the codes may be related to the same problem. Who is correct?

Which term represents an online diagnostic information service designed to help the automotive service technician in diagnosing difficult problems?

Diagnosing a loss of the computer's reference voltage is being discussed. Technician A says that the VREF signal should be between about 4.2 and 5.2 V when measured at a sensor. Technician B says that the VREF signal should be between about 5.2 and 9.6 V. Who is correct?

When using an electrical schematic, the first step is to:

A Review of Electricity and Electronics

Computers in Cars

Common Components for Computerized Engine Control Systems

Common Operating Principles for Computerized Engine Control Systems

Introduction to Diagnostic Concepts and Diagnostic Equipment

Exhaust Gas Composition and Analysis

Understanding Obd Ii

Automotive Multiplexing and Networking of Computers

Hybrid and Electric Vehicles

Advanced Driver Assist Systems

General Motors Computerized Engine Controls

Ford Motor Company Computerized Engine Controls

Chrysler Corporation Computerized Engine Controls

European Bosch Computerized Engine Controls

Asian Computerized Engine Controls

Filters

Exam 11: Approach to Diagnostics

Which of these statements is NOT a recommendation when using a flowchart?

Current ramping can be used to identify problems with a motor:

Which device is NOT an essential tool of electronic system diagnosis?

Pinpoint testing a DTC is being discussed. Technician A says that to verify monitor readiness status, you should use a scan tool. Technician B says that if a monitor is displayed on the scan tool as N/A, it does not apply to the vehicle you are working on. Who is correct?

Which statement is true concerning a breakout box (BOB)?

What scenario is indicated by a loss of more than about 2 in. Hg of intake manifold vacuum as the RPM is increased?

What process is involved with on-board reprogramming?

If an OBD II PCM has set a catalyst efficiency code, all of the following pre-checks should be performed before condemning the converter EXCEPT for:

Technician A says that a self-test DTC identifies a hard fault. Technician B says that a memory DTC always represents a soft fault. Who is correct?

What should you do first if the symptom the customer reports does not appear to be present?

TSBs are being discussed. Technician A says TSBs are produced and issued by the International Automotive Technicians' Network. Technician B says a TSB-recommended repair may involve something as in-depth as reflashing an ECU. Who is correct?

Which item is NOT considered a tool for pinpoint testing?

Current ramping is a diagnostic procedure that is best suited for diagnosing problems associated with:

Three-in-one diagnostic tools are being discussed. Technician A says the Snap-on Modis can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Technician B says the OTC Genisys can be configured to include a scan tool, a DSO, and an exhaust gas analyzer. Who is correct?

If the engine cranks but does not start, what should be checked?

A vehicle equipped with OBD II is being diagnosed with a scan tool. There are three codes stored. Technician A says to clear the codes and drive the vehicle to see if any reappear. Technician B says the codes may be related to the same problem. Who is correct?

Which term represents an online diagnostic information service designed to help the automotive service technician in diagnosing difficult problems?

Diagnosing a loss of the computer's reference voltage is being discussed. Technician A says that the VREF signal should be between about 4.2 and 5.2 V when measured at a sensor. Technician B says that the VREF signal should be between about 5.2 and 9.6 V. Who is correct?

When using an electrical schematic, the first step is to:

A Review of Electricity and Electronics

Computers in Cars

Common Components for Computerized Engine Control Systems

Common Operating Principles for Computerized Engine Control Systems

Introduction to Diagnostic Concepts and Diagnostic Equipment

Exhaust Gas Composition and Analysis

Understanding Obd Ii

Automotive Multiplexing and Networking of Computers

Hybrid and Electric Vehicles

Advanced Driver Assist Systems

General Motors Computerized Engine Controls

Ford Motor Company Computerized Engine Controls

Chrysler Corporation Computerized Engine Controls

European Bosch Computerized Engine Controls

Asian Computerized Engine Controls

Filters